//设置捕捉环境
public static void StartSnappingEnv()
{
if (m_bStartSnap)
{
m_SnappingEnv = DataEditCommon.GetSnapEnvironment(m_hookHelper, snappingType);
if (m_SnappingEnv != null)
{
m_Snapper = m_SnappingEnv.PointSnapper;
m_SnappingFeedback = new SnappingFeedbackClass();
m_SnappingFeedback.Initialize(m_hookHelper.Hook, m_SnappingEnv);
}
}
}